Invention Grant
- Patent Title: Magnetic shield for use in a location sensing system
- Patent Title (中): 用于位置传感系统的磁屏蔽
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Application No.: US12754113Application Date: 2010-04-05
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Publication No.: US07916501B2Publication Date: 2011-03-29
- Inventor: M. Benton Free , Bernard O. Geaghan , Karl P. Hauck , Albert H. Libbey , Billy Lee Weaver
- Applicant: M. Benton Free , Bernard O. Geaghan , Karl P. Hauck , Albert H. Libbey , Billy Lee Weaver
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Johannes P. M. Kusters
- Main IPC: H05K9/00
- IPC: H05K9/00

Abstract:
An energy transfer apparatus with a magnetic shield is configured to magnetically couple energy from a fixed location to a mobile or moveable device within a field-activated space of the energy transfer apparatus. Apparatuses include a location sensing surface and a drive coil arranged in relation to a periphery of the location sensing surface. A magnetic shield plate is disposed below the location sensing surface and the drive coil. The shield plate includes a number of radially oriented slots originating at, and distributed about, a periphery of the shield plate.
Public/Granted literature
- US20100188832A1 MAGNETIC SHIELD FOR USE IN A LOCATION SENSING SYSTEM Public/Granted day:2010-07-29
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